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What is “with (nolock)” in SQL Server?
...ed at once than because of a uncommitted read from a database.
That said, SQL Server 2005 fixed most of the bugs that made NOLOCK necessary. So unless you are using SQL Server 2000 or earlier, you shouldn't need it.
Further Reading
Row-Level Versioning
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How to convert int to char with leading zeros?
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You can also use FORMAT() function introduced in SQL Server 2012.
http://technet.microsoft.com/library/hh213505.aspx
DECLARE @number1 INT, @number2 INT
SET @number1 = 1
SET @number2 = 867
SELECT FORMAT(@number1, 'd10')
SELECT FORMAT(@number2, 'd10')
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SQL: capitalize first letter only [duplicate]
I need an SQL statement to capitalize the first letter of each word. The other characters have to be lower case.
4 Answers
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proper hibernate annotation for byte[]
...eger,
java.math.BigDecimal,
java.util.Date,
java.util.Calendar, java.sql.Date,
java.sql.Time, java.sql.Timestamp,
byte[], Byte[], char[], Character[], enums, and any other
type that implements Serializable.
As described in Section 2.8, the use
of the Basic annotation is optional
fo...
Finding duplicate values in a SQL table
...een attributes in a relation.
Support is not consistent:
Recent PostgreSQL supports it.
SQL Server (as at SQL Server 2017) still requires all non-aggregated columns in the GROUP BY.
MySQL is unpredictable and you need sql_mode=only_full_group_by:
GROUP BY lname ORDER BY showing wrong results;
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Change auto increment starting number?
In MySQL, I have a table, and I want to set the auto_increment value to 5 instead of 1 . Is this possible and what query statement does this?
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Is there a better way to dynamically build an SQL WHERE clause than by using 1=1 at its beginning?
I'm building some SQL query in C#. It will differ depending on some conditions stored as variables in the code.
22 Answer...
How to avoid the “divide by zero” error in SQL?
...t instantly get why this works, NULLIF(d,0) will return NULL if d is 0. In SQL, dividing by NULL returns NULL. The Coalesce replaces the resulting NULL by 0.
– GuiSim
Apr 16 '14 at 15:59
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SQL Server IN vs. EXISTS Performance
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That's a good point. The IN statement requires SQL Server to generate a complete result set, and then create a big IF statement I think.
– Randy Minder
Jan 14 '10 at 16:04
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How do I drop a foreign key in SQL Server?
I have created a foreign key (in SQL Server) by:
8 Answers
8
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